Government officials as public officials must use the Indonesian language in accordance with the principle of politeness and principles of cooperation. The purpose of this study was to express the performance of politeness using the Indonesian language orally by government officials of West Sumatra. The research data were 746 speeches (spoken) of government officials in West Sumatera, Indonesia, namely governor, vice governor, regent, and mayor who still held office in 2017. Data analysis technique was data identification that is determining politeness using Indonesian from the principle aspect of manners and principles of cooperation, data classification, data interpretation, and concluding. The research findings were the performance of the principle of courtesy of officials of West Sumatra is in accordance with the maxim of wisdom, the maxim of generosity, the maxim of praise, the maxim humility, the maxim of agreement, the maxim of sympathy. The findings on the performance of the principle of cooperation of officials of West Sumatra are in accordance with the maxim of quantity and manner, the maxim of quantity, quality, and manner, the maxim of relationships and ways, the maxim of the way. The performance speech of officials of West Sumatra in violation of the principle of cooperation that violates the maxim of quality and method and violate the maxim relationship.